1 //===-- ErlangGC.cpp - Erlang/OTP GC strategy -------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the Erlang/OTP runtime-compatible garbage collector
11 // (e.g. defines safe points, root initialization etc.)
12 //
13 // The frametable emitter is in ErlangGCPrinter.cpp.
14 //
15 //===----------------------------------------------------------------------===//
16 
17 #include "llvm/CodeGen/GCs.h"
18 #include "llvm/CodeGen/GCStrategy.h"
19 #include "llvm/CodeGen/MachineInstrBuilder.h"
20 #include "llvm/MC/MCContext.h"
21 #include "llvm/MC/MCSymbol.h"
22 #include "llvm/Target/TargetInstrInfo.h"
23 #include "llvm/Target/TargetMachine.h"
24 #include "llvm/Target/TargetSubtargetInfo.h"
25 
26 using namespace llvm;
27 
28 namespace {
29 
30 class ErlangGC : public GCStrategy {
31 public:
32   ErlangGC();
33 };
34 }
35 
36 static GCRegistry::Add<ErlangGC> X("erlang",
37                                    "erlang-compatible garbage collector");
38 
linkErlangGC()39 void llvm::linkErlangGC() {}
40 
ErlangGC()41 ErlangGC::ErlangGC() {
42   InitRoots = false;
43   NeededSafePoints = 1 << GC::PostCall;
44   UsesMetadata = true;
45   CustomRoots = false;
46 }
47